AIM:To investigate the choroidal thickness changes in macular area and facular area of patients with diabetic retinopathy( DR) after panretinal photocoagulation( PRP).METHODS:Totally 40 cases( 78 eyes) of DR patients with PRP in our hospital from January 2015 to January2017 were selected,and optical coherence tomography( OCT) was conducted for preoperative and postoperative choroidal thickness in macular area and facular area.RESULTS:At 1 mo after PRP,the subfoveal choroidal thickness( SFCT),nasal choroidal...